)Beginners only!)Free points for newbies!:)

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

Agas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kpa to a final volume of 0.065 m^3 while its temperature is kept constant. how much work is done by the system?

What are the necessary conditions for fusion?